a1(:,28) = [];
a2(:,28) = [];
a3(:,28) = [];
a4(:,28) = [];
a5(:,28) = [];
a6(:,28) = [];
a7(:,28) = [];
a8(:,28) = [];
a9(:,28) = [];
a10(:,28) = [];
a11(:,28) = [];
a12(:,28) = [];
a13(:,28) = [];
a14(:,28) = [];
a15(:,28) = [];

m1(:,28) = [];
m2(:,28) = [];
m3(:,28) = [];
m4(:,28) = [];
m5(:,28) = [];
m6(:,28) = [];
m7(:,28) = [];
m8(:,28) = [];
m9(:,28) = [];
m10(:,28) = [];
m11(:,28) = [];
m12(:,28) = [];
m13(:,28) = [];

n1(:,28) = [];
n2(:,28) = [];
n3(:,28) = [];

save ('subband_data.mat');